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[英]How to set asp.net 's label 's text using javascript and get setted value on server side
[英]Get ASP.NET label's text or value in JavaScript
我想在ASP Web表單中將一串數據從C#傳輸到JavaScript。 我的方法是在C#中將數據設置為ASP標簽的文本,然后在JS中按ID獲取標簽的文本。
C#代碼(ascx.cs文件):
List<Event> eventList;
protected void Page_Load(object sender, EventArgs e)
{
string message = string.Empty;
SPSite franasabank = new SPSite("http://lbshrptweb/sites/fransabank/");
SPWeb calendar = franasabank.OpenWeb();
SPList list = calendar.Lists["Fransabank Calendar"];
eventList = new List<Event>();
foreach (SPListItem oItem in list.Items)
{
// Access each item in the list...
DateTime startTime = (DateTime)oItem["Start Time"];
DateTime endTime = (DateTime)oItem["End Time"];
string status = (String)oItem["Status"];
string title = oItem.Title;
string description = (String)oItem["Description"];
Event calendar_event = new Event(startTime, endTime, status, title, description);
eventList.Add(calendar_event);
}
foreach (Event item in eventList)
{
message += item.Title + " " + item.Description + item.StartDate + "-" + item.EndDate + "-" + item.Status + "\n";
}
Label1.Text = message;
}
顯示Label(ascx文件)的HTML片段:
<div data-ng-app="Calendar">
<div data-ng-controller="CalendarController" id="mycontroller">
<div class="row " data-ng-init="Initialize()">
<asp:Label ID="Label1" runat="server" Text="Label" ></asp:Label>
JavaScript代碼:
<script>
var a = document.getElementById('<%= Label1.ClientID %>');
console.log(a);
</script>
我在變量'a'中收到數據為null。 我試過了
var a = document.getElementById('<%= Label1.ClientID %>').innerHTML;
但它也是空的
聽起來像Javascript在加載標簽之前運行
將js放在頁面上的<asp:Label>
。 最好在</body>
之前:
<script> var a = document.getElementById('<%= Label1.ClientID %>'); console.log(a); </script> </body>
或者,您可以使用jQuery $(document).ready()
包圍代碼塊:
<script> $(document).ready(function () { var a = document.getElementById('<%= Label1.ClientID %>'); console.log(a); }); </script>
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